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June 30
 1879: The
California Electric Light Company was organized in San Francisco,
becoming the first electric company formed to produce and sell electricity 1905: Albert
Einstein published his theory on
special
relativity, "On the Electrodynamics of Moving Bodies." 1908: An
unexplained explosion in Tunguska, Siberia knocked down trees in
a 40-mile radius and knocked people unconscious 40 miles away. 1918: Francis Stanley,
famous for his Stanley Steamer
automobile, died. 1930: The first round-the-world broadcast from the U.S. used a series
of short-wave radio relays and took one-eighth of a second. 1946: The first
atomic
bomb dropped from an airplane over water occurred over the Bikini Atoll onto a target
group of 73 scrapped ships. 1948: The invention of the
transistor was announced
by Bell Laboratory. 1948: The first telephone recording devices were authorized for public
use in the U.S., and required a periodic "beep" to alert the users. 1953: The first
Corvette rolled off the Chevrolet assembly line (it sold for $3,250).
1961: Dr. Lee de Forest, inventor
of the Audion tube, died. 1971: Three cosmonauts aboard
Soyuz 11 were found dead inside their spacecraft after it had returned
to Earth. 1972: The first leap second time correction was added. 1997: China resumed
sovereignty over Hong Kong.
| Jan
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
Dec |
Note: These
historical tidbits have been collected from various sources, mostly on the Internet.
As detailed in
this article, there
is a lot of wrong information that is repeated hundreds of times because most websites
do not validate with authoritative sources. On RF Cafe, events with
hyperlinks have been verified. Many years ago,
I began commemorating the birthdays of notable people and events with
special RF Cafe logos.
Where available, I like to use images from postage stamps from the country where
the person or event occurred. Images used in the logos are often from open source websites
like Wikipedia, and are specifically credited with a hyperlink back to the source where
possible. Fair Use
laws permit small samples of copyrighted content.
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